About Trézór Bridge
Trézór Bridge is the official local service designed to securely connect your Trézór hardware wallet with desktop applications and browser-based tools. Its goal is pragmatic and focused: provide a stable, privacy-focused pathway for device discovery and message transport so that users can interact with their hardware wallet reliably across operating systems and browser versions. The Bridge intentionally keeps a minimal surface area — it does not handle private keys or sign transactions; it simply ensures that requests get to the device and that signed responses return safely to the requesting application.
Modern browsers impose varying restrictions and behaviors for USB device access, leading to inconsistent detection and permission flows across platforms. Trézór Bridge addresses these real-world compatibility problems by offering a local, consistent endpoint that applications can use. Instead of each app implementing fragile browser-specific workarounds, app developers rely on the Bridge to enumerate devices and forward messages. This results in a smoother end-user experience: devices appear consistently, permission prompts behave predictably, and fewer obscure errors prevent users from completing essential actions.
Security is central to Trézór’s philosophy. At every step, the hardware wallet enforces the rule that private keys must never leave the device. When an application requests a transaction signature, the request is forwarded by Bridge to the device. The Trézór displays the details of the operation on its secure screen; you confirm the exact transaction using the physical buttons. Only after approval does the device produce a signed response, which Bridge transmits back to the application. Because Bridge never holds or transmits sensitive secret material to remote endpoints, the overall attack surface remains small and manageable.
Bridge was intentionally developed as a lightweight background service. It runs quietly, can start with your system if you opt in, and uses minimal resources. Regular updates keep it compatible with the evolving landscape of operating systems and browser APIs. Cross-platform installers are provided to simplify installation and updates, and maintainers publish clear documentation and troubleshooting steps for common scenarios. Users who keep Bridge updated benefit from the latest compatibility fixes and security improvements.
Privacy is also a core consideration. Trézór Bridge operates entirely on the user’s machine and does not broadcast device usage data or telemetry to external servers. Connections are initiated locally and are under the user's control. When you approve an application’s request on the device screen, the action is executed; if you never grant permission, no operation occurs. This local-first approach supports strong privacy guarantees and aligns with Trézór’s commitment to user autonomy.
Developers building wallets, exchanges, or utilities for hardware wallets appreciate the predictable environment that Bridge provides. Rather than implementing complicated, brittle detection code that behaves differently on each platform, developers can rely on a documented local endpoint. This reduces development friction and leads to more robust integrations that work the same way for end users regardless of their browser or OS choice.
In practical terms, installing Trézór Bridge is often the easiest way to resolve connectivity issues and improve the day-to-day experience of using a Trézór device with desktop software. If you encounter detection problems, the most common remedies involve ensuring Bridge is installed and running, testing a high-quality USB cable, restarting the browser, and following the platform-specific notes available in the documentation. These steps solve the majority of issues and restore a smooth workflow.
In short, Trézór Bridge balances usability and protection. It enables modern conveniences — web and desktop integrations — while preserving hardware-level assurances: private keys that never leave the device and signatures that are produced only after user confirmation. If you use a Trézór device on a desktop computer, installing Bridge is a practical, secure choice that simplifies everyday crypto management and keeps your keys safe.